Modifying the conductivity-polarization relation to match the Kubo model violates gauge invariance, confirming the nonlocal quantum field theory description for graphene conductivity.
Rodriguez-Lopez, J.-S
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The Kubo-based conductivity model for graphene is correct, predicts vanishing current without external field, shows no double pole in permittivity, and is consistent with standard literature on losses.
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Comment on "Electric conductivity of graphene: Kubo model versus a nonlocal quantum field theory model (arXiv:2403.02279v3)"
Modifying the conductivity-polarization relation to match the Kubo model violates gauge invariance, confirming the nonlocal quantum field theory description for graphene conductivity.
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Reply to "Comment on "Electric conductivity in graphene: Kubo model versus a nonlocal quantum field theory model"" (ArXiv:2506.10792v2)
The Kubo-based conductivity model for graphene is correct, predicts vanishing current without external field, shows no double pole in permittivity, and is consistent with standard literature on losses.